Article
Optics
Stefan Steinhauser, Ehsan Fattahi, Dominik Geier, Thomas Becker
Summary: Laser Speckle Rheology (LSR) is an optical technology used for non-invasive evaluation of a material's rheological properties. This paper proposes a method to correct non-ideal speckle patterns using a diode laser instead of the traditional He-Ne laser. Experimental results show that the corrected speckle patterns acquired with the diode laser are comparable to those acquired with the He-Ne laser.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Weijuan Chen, Yi Zhang, Huicheng Yang, Yishen Qiu, Hui Li, Zhihao Chen, Changyuan Yu
Summary: Researches have proposed and demonstrated a non-invasive and continuous ballistocardiogram (BCG) based vital signs monitoring system using a seven-core fiber interferometer (SCFI) sensor, providing a more convenient, compact, and cost-effective way to measure vital signs. Results show that the measured heart rate (HR) and respiratory rate (RR) of the proposed sensor are in good agreement with commercial physiological devices, suggesting promising potential for long-term and non-invasive vital signs monitoring.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
F. J. Torcal-Milla, J. Lobera, A. M. Lopez, V Palero, N. Andres, M. P. Arroyo
Summary: This paper aims to validate a Mach-Zehnder based interferometric method to measure the temporal coherence length of broadband finite size light sources, and provide a qualitative value for the temporal coherence length of white LEDs. The technique is validated by comparing the results with those obtained from the spectrum. It is also shown that the temporal coherence length can be obtained from a single measurement without scanning.
Article
Biochemistry & Molecular Biology
Victor Hugo Pacagnelli Infante, Roland Bennewitz, Anna Lena Klein, Martina C. C. Meinke
Summary: The localization and quantification of Meissner corpuscles in glabrous skin using non-invasive optical microscopy techniques were reported. The local morphology above Meissner corpuscles was suggested to have a function in tactile perception.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physics, Multidisciplinary
Deming Peng, Xuan Zhang, Yonglei Liu, Yimeng Zhu, Yahong Chen, Fei Wang, Yangjian Cai
Summary: This study demonstrates that the hidden image information behind a random scattering medium can be encoded in the complex spatial coherence structure of a partially coherent light beam. Experimental validation shows that the image information can be successfully recovered using spatial coherence measurement and an iterative phase retrieval algorithm. The reconstructed image not only captures the spatial shape but also provides information about the position, including lateral shift and longitudinal distances.
FRONTIERS IN PHYSICS
(2022)
Article
Optics
Michele Norgia, Alessandro Pesatori
Summary: Real-time measurement of plastic film thickness is crucial for ensuring film flatness, with standard contact-based methods facing calibration and damage challenges. Existing non-contact optical techniques have not been practical due to film vibration. A novel low-coherence fiber interferometer structure proposed in this study combines advantages of traditional approaches, providing a potential solution for measuring blown film thickness during production.
Review
Engineering, Mechanical
Dongxu Wu, Fengzhou Fang
Summary: Optical interferometry is a powerful tool in precision manufacturing for measuring and characterizing areal surface topography, but existing techniques are insufficient to meet the increasing demands for accuracy, speed, robustness, and dynamic range. This paper provides an in-depth perspective on surface topography reconstruction for optical interferometric measurements, presenting principles, configurations and applications of typical optical interferometers, as well as summarizing recent advances in fringe analysis algorithms. New developments in measurement accuracy, noise resistance, self-calibration ability, and computational efficiency are discussed, along with the challenges facing optical interferometry techniques in surface topography measurement and proposed solutions using advanced techniques.
FRONTIERS OF MECHANICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Yuxin Yang, Xiaofei Wei, Nannan Zhang, Juanjuan Zheng, Xing Chen, Qian Wen, Xinxin Luo, Chong-Yew Lee, Xiaohong Liu, Xingcai Zhang, Jun Chen, Changyuan Tao, Wei Zhang, Xing Fan
Summary: This study introduces a non-printed integrated-circuit textile (NIT) that can be used for biomedical and theranostic applications, woven through a unique method. The woven circuit textile is self-powered and capable of wireless biomedical monitoring, suggesting a potential future in wearable health monitoring technologies.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Ran Song, Xianglong Hao, Xuyang Jing, Donghao Deng, Yanan Li, Xiaoguang Qi, Juan Su, Chi Wu
Summary: An integrated optical waveguide-type laser velocimeter has been proposed and demonstrated for measuring ultra-low speeds of gases, liquids or solids at the near-surface. The device is small in size, high in precision, large in dynamic range, and low in cost, making it suitable for non-invasive measurements.
IEEE SENSORS JOURNAL
(2022)
Article
Neurosciences
Kim M. Hemsley, Helen Beard, Glyn Chidlow, Teresa Mammone, Leanne K. Winner, Daniel Neumann, Barbara King, Marten F. Snel, Paul J. Trim, Robert J. Casson
Summary: Optical coherence tomography (OCT) is a non-invasive method that can be used to rapidly and quantitatively examine the integrity of the neuroretina. It has been shown that OCT can be used to observe retinal thinning in patients with childhood dementia, and to assess the improvement of retinal structure after treatment. Furthermore, OCT can provide insights into other childhood dementias based on the correlation between retinal and brain degeneration in Sanfilippo syndrome.
EXPERIMENTAL NEUROLOGY
(2024)
Article
Chemistry, Analytical
Alex Ce Zhang, Yu-Hwa Lo
Summary: This article describes a non-invasive method for directly measuring arterial blood flow speed based on the diffused light model. The method can measure arterial blood speed without any prior knowledge or assumption about the geometric or mechanic properties of the blood vessels.
Article
Optics
Azeem Ahmad, Anowarul Habib, Vishesh Dubey, Balpreet Singh Ahluwalia
Summary: Low coherence interference microscopy (LCIM) provides high spatial phase sensitivity for test specimens. A non-identical objective lens configuration is used for LCIM, and advanced iterative algorithm and principal component analysis algorithm are integrated to recover phase images without quadratic phase error.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Ophthalmology
Alberto Dominguez-Vicent, Abinaya Priya Venkataraman, Amanda Dalin, Rune Brautaset, Robert Montes-Mico
Summary: This study aimed to evaluate the repeatability and agreement of a fully automated swept-source optical coherence tomography (SS-OCT) with an optical low coherence reflectometry (OLCR) for several biometric parameters. Measurements were conducted on 74 eyes of 74 patients using Eyestar 900 SS-OCT and Lenstar LS 900 OLCR. Repeatability was assessed using intrasubject standard deviation, coefficient of variability (CoV), and coefficient of repeatability (CoR), while agreement between instruments was evaluated using Bland-Altman analysis.
Article
Optics
Jianan Fang, Kun Huang, E. Wu, Ming Yan, Heping Zeng
Summary: This article introduces an infrared 3D imaging system capable of detecting three-dimensional structure and reflectivity information. The system operates at single-photon sensitivity and femtosecond timing resolution, enabling imaging under low-light conditions. By nonlinear frequency upconversion and recording with a silicon camera, the presented system achieves high lateral and depth resolutions for 3D reconstruction. Additionally, a numerical denoiser based on spatiotemporal correlation allows the retrieval of object profile and reflectivity even with a detected flux below 0.05 photons/pixel/second. This infrared 3D imager features high detection sensitivity, precise timing resolution, and wide-field operation, offering new possibilities in life and material sciences.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Biochemical Research Methods
Yusuke Ichimura, Takumi Kuritsubo, Kuniaki Nagamine, Ayako Nomura, Isao Shitanda, Shizuo Tokito
Summary: This study demonstrates the passive, non-invasive extraction and in situ potentiometric detection of human sweat chloride ions using a stable printed planar liquid-junction reference electrode-integrated hydrogel-based sensor pad. The sensor pad composed of screen-printed Ag/AgCl-based electrodes can continuously extract sweat Cl- ions into the gel for detection without the need for exercise or drug administration. The fully screen-printed sensor shows promise for low-cost daily monitoring of human Cl- ions in sweat in the future.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
J. Czajkowski, P. Kinnunen, K. Haapanen, J. Niinimaki, T. Fabritius
MEASUREMENT SCIENCE AND TECHNOLOGY
(2016)
Article
Nanoscience & Nanotechnology
Jianfeng Huang, Changxu Liu, Yihan Zhu, Silvia Masala, Erkki Alarousu, Yu Han, Andrea Fratalocchi
NATURE NANOTECHNOLOGY
(2016)
Article
Chemistry, Multidisciplinary
Wei Peng, Lingfei Wang, Banavoth Murali, Kang-Ting Ho, Ashok Bera, Namchul Cho, Chen-Fang Kang, Victor M. Burlakov, Jun Pan, Lutfan Sinatra, Chun Ma, Wei Xu, Dong Shi, Erkki Alarousu, Alain Goriely, Jr-Hau He, Omar F. Mohammed, Tom Wu, Osman M. Bakr
ADVANCED MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Makhsud I. Saidaminov, Md. Azimul Haque, Maxime Savoie, Ahmed L. Abdelhady, Namchul Cho, Ibrahim Dursun, Ulrich Buttner, Erkki Alarousu, Tom Wu, Osman M. Bakr
ADVANCED MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Wei Peng, Xiaohe Miao, Valerio Adinolfi, Erkki Alarousu, Omar El Tall, Abdul-Hamid Emwas, Chao Zhao, Grant Walters, Jiakai Liu, Olivier Ouellette, Jun Pan, Banavoth Murali, Edward H. Sargent, Omar F. Mohammed, Osman M. Bakr
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2016)
Article
Chemistry, Physical
Banavoth Murali, Emre Yengel, Wei Peng, Zhijie Chen, Mohd S. Alias, Erkki Alarousu, Boon S. Ooi, Victor Burlakov, Alain Goriely, Mohamed Eddaoudi, Osman M. Bakr, Omar F. Mohammed
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2017)
Article
Chemistry, Physical
Yuhai Zhang, Makhsud I. Saidaminov, Ibrahim Dursun, Haoze Yang, Banavoth Murali, Erkki Alarousu, Emre Yengel, Buthainah A. Alshankiti, Osman M. Bakr, Omar F. Mohammed
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2017)
Article
Chemistry, Multidisciplinary
Smritakshi P. Sarmah, Victor M. Burlakov, Emre Yengel, Banavoth Murali, Erkki Alarousu, Ahmed M. El-Zohry, Chen Yang, Mohd S. Alias, Ayan A. Zhumekenov, Makhsud I. Saidaminov, Namchul Cho, Nimer Wehbe, Somak Mitra, Idris Ajia, Sukumar Dey, Ahmed E. Mansour, Maged Abdelsamie, Aram Amassian, Iman S. Roqan, Boon S. Ooi, Alain Goriely, Osman M. Bakr, Omar F. Mohammed
Article
Chemistry, Physical
Banavoth Murali, Emre Yengel, Chen Yang, Wei Peng, Erkki Alarousu, Osman M. Bakr, Omar F. Mohammed
ACS ENERGY LETTERS
(2017)
Article
Multidisciplinary Sciences
Yan Lu, Xinying Shi, Zhongjia Huang, Taohai Li, Meng Zhang, Jakub Czajkowski, Tapio Fabritius, Marko Huttula, Wei Cao
SCIENTIFIC REPORTS
(2017)
Article
Chemistry, Multidisciplinary
Rafal Sliz, Jakub Czajkowski, Tapio Fabritius
Article
Materials Science, Paper & Wood
Janne Lauri, Antti Koponen, Sanna Haavisto, Jakub Czajkowski, Tapio Fabritius
Article
Chemistry, Multidisciplinary
Feng Li, Hong Wang, Dominik Kufer, Liangliang Liang, Weili Yu, Erkki Alarousu, Chun Ma, Yangyang Li, Zhixiong Liu, Changxu Liu, Nini Wei, Fei Wang, Lang Chen, Omar F. Mohammed, Andrea Fratalocchi, Xiaogang Liu, Gerasimos Konstantatos, Tom Wu
ADVANCED MATERIALS
(2017)
Article
Nanoscience & Nanotechnology
Jeremy Barbe, Max L. Tietze, Marios Neophytou, Banavoth Murali, Erkki Alarousu, Abdulrahman El Labban, Mutalifu Abulikemu, Wan Yue, Omar F. Mohammed, Iain McCulloch, Aram Amassian, Silvan Del Gobbo
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Chemistry, Applied
Amani A. Alsam, Shawkat M. Aly, Manas R. Parida, Erkki Alarousu, Zhen Cao, Luigi Cavallo, Omar F. Mohammed
